"""
@name : python起步
@author : wenyao
@projectname: xsfh
"""

# a = b = 300
# print(id(a))

# 标识符（变量名，函数名）
# 字母数字下划线任意组合
# 不能以数字开头
# 关键字不能作为变量名

# _a = "hello"
# 用户名 = "wy"
# 1a = 12
# for = 5

# username = "root"
# if username == "root1":
#     print("ok")
# else:
#     print("error");print("error2")

# {}
# name = "wy"
# age = 18
# # print("hello world!")
# # print(id(name))
# # help(print)
# # help(id)
# # print(type(name),type(age))
# # print(dir(name))
# #变量名.属性名 的方式去访问
# print(name.center(20,"*"))

# 输入输出
# 输出
# 提示： *values  表示可以传递任意个参数进去，参数之间使用逗号分隔
# print(1,3,4,5,6,7,8)
# #提示 sep  指定分隔符
# print(1,3,4,5,sep="****")
# #end  指定结尾添加字符
# a = "xixi"
# b = "haha"
# print()
# print(a,end="%%")
# print(b)
# #
# print(help(print))
# #file  可以指定输出方式（默认是输出到屏幕）    输出到文件
# f = open("test.txt","w+")
# print("hello world!",file=f)

# xxx(x,b)
# 内建函数   python解释器里自带的，拿来就用的

# 输入
# input
# username = input("请输入用户名:")
# passwd = input("请输入密码:")
# print(username,passwd)
# print(type(username), type(passwd))
#
# num = int(input("请输入一个数字:"))
#
# print(int(num)/10)

# string
#
# username = input("请输入你的姓名:")
# age = input("请输入你的年龄:")
# hobby = input("请输入你的爱好:")
# print(username,"的年龄是：",age," 爱好是:",hobby)

# 密码隐藏
# [root@fengdeyong python-test]# python3 passwd.py
# 请输入用户名:sc
# 请输入密码:
# sc 的密码为 123456
# [root@fengdeyong python-test]# cat passwd.py
# import getpass
# username = input("请输入用户名:")
# passwd = getpass.getpass("请输入密码:")
# print(username,"的密码为",passwd)

import getpass

# aaaabbb
username = input()
print(1, 2, 3, 4)
